header{
    width: 100%;
    height: 60px;
    background-color: black;
}
header ul{
    width: 100%;
    height: 100%;
    display:flex;
    justify-content: space-around;
    align-items: center;
}
header ul li{
    list-style: none;
    color:white;
    font-size: 14px;
}
.navigation_bar_container{
   width: 100%;
   height: 40px;
   background-color: pink;
   display: inline-flex;
   justify-content: space-around;
   align-items: center;
}